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Title: Effect of Carbon Overcoat Implantation on the Magnetic and Structural Properties of Perpendicular Recording Media
Authors: Piramanayagam, S. N.
Shakerzadeh, M.
Varghese, B.
Tan, H. K.
Keywords: Areal density
Carbon overcoat (COC)
Magnetic anisotropy
Magnetic recording
Recording media
Issue Date: 2015
Source: Piramanayagam, S. N., Shakerzadeh, M., Varghese, B., & Tan, H. K. (2015). Effect of Carbon Overcoat Implantation on the Magnetic and Structural Properties of Perpendicular Recording Media. IEEE Transactions on Magnetics, 51(11), 3202104-.
Series/Report no.: IEEE Transactions on Magnetics
Abstract: Carbon overcoats play an important role in the corrosion protection of recording media used in hard disk drive technology. Filtered-cathodic vacuum arc (FCVA) has been studied in the past as a potential technology for depositing media overcoat. In order to achieve the desired property of FCVA carbon, it is essential to apply a suitable bias voltage, which results in an energetic carbon deposition on the magnetic layer of the recording media. In this paper, we focus our attention on the implantation effects of the energetic carbon on the magnetic and the structural properties of the recording media of two types, antiferromagnetically coupled and a single layer, in order to gain a meaningful insight on the implantation and its effect. The studies reveal that the energetic deposition alters the anisotropy constant of the magnetic layer, resulting in a reduction in the coercivity and the thermal stability factor.
DOI: 10.1109/TMAG.2015.2446521
Rights: © 2015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. The published version is available at: [].
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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